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CWE-834

Excessive Iteration

82 CVEs Avg CVSS 6.6 MITRE
0
CRITICAL
30
HIGH
52
MEDIUM
0
LOW
15
POC
0
KEV

Monthly

CVE-2026-71852 Aug 07, 18:54 PyPI MEDIUM POC PATCH GHSA This Month

Resource exhaustion in pypdf before 6.15.0 enables denial of service via crafted PDF files containing CID font width entries with maliciously large range values. Any application that processes untrusted PDFs using pypdf's text extraction or font parsing routines is affected, as the library iterates over attacker-controlled CID width ranges without bounds enforcement, consuming excessive CPU and memory. No public exploit code has been identified at time of analysis, and this vulnerability is not listed in the CISA KEV catalog.

Information Disclosure Red Hat Suse
NVD GitHub VulDB
CVSS 4.0
4.8
EPSS
0.1%
CVE-2026-59644 Aug 03, 00:50 HIGH PATCH This Week

CPU exhaustion in Bouncy Castle for Java's MLS (Messaging Layer Security) implementation allows a network attacker to trigger unbounded HKDF key-derivation iterations by supplying a crafted 32-bit generation counter in an MLS message. The hash-ratchet in GroupKeySet.get(int generation) advances one HKDF step per skipped generation without any upper bound, so a maximally crafted counter forces up to ~4.29 billion derivation steps on the receiving process. Scored CVSS 4.0 at 8.7 with High availability impact and no authentication prerequisites per vendor scoring; no public exploit code or KEV listing has been identified at time of analysis.

Java Information Disclosure Bc Java
NVD GitHub VulDB
CVSS 4.0
8.7
EPSS
0.3%
CVE-2026-64641 Jul 22, 22:59 npm HIGH PATCH GHSA This Week

Denial of service in Next.js App Router with Server Actions allows remote attackers to exhaust CPU resources and block request processing. Affected versions include all 13.0.0–15.5.20 and 16.0.0–16.2.10 releases. No active exploitation or public exploit code has been identified at time of analysis.

Information Disclosure Red Hat
NVD GitHub VulDB
CVSS 4.0
8.2
EPSS
0.5%
CVE-2026-48156 May 28, 14:50 PyPI MEDIUM PATCH GHSA This Month

Denial-of-service via algorithmic complexity in pypdf before 6.12.0 allows an attacker who can supply a crafted PDF file to cause excessive processing time during cross-reference stream parsing. The vulnerability is triggered by crafting a PDF with /W [0 0 0] field values in a cross-reference stream combined with a large /Size value, which causes the library to perform unbounded iteration over zero-byte entries. No public exploit code has been identified at time of analysis, and this vulnerability is not listed in the CISA KEV catalog; however, any application that processes untrusted PDF input using pypdf is exposed.

Information Disclosure Python Suse Red Hat
NVD GitHub
CVSS 4.0
5.1
EPSS
0.0%
CVE-2026-41313 Apr 22, 21:04 PyPI MEDIUM PATCH This Month

Denial of service via algorithmic complexity in pypdf versions prior to 6.10.2 allows local attackers to cause long runtimes by crafting a PDF with an excessively large trailer /Size value when loaded in incremental mode. The vulnerability requires user interaction to load the malicious PDF and results in availability degradation rather than data compromise. Patch version 6.10.2 is available from the vendor.

Information Disclosure Python Red Hat Suse
NVD GitHub
CVSS 4.0
4.8
EPSS
0.0%
CVE-2026-41168 Apr 22, 20:49 PyPI MEDIUM PATCH This Month

Denial of service in pypdf prior to version 6.10.1 allows remote attackers to craft malicious PDF files with oversized cross-reference stream `/Size` values or object stream `/N` values, causing excessive processing time and long runtimes. No authentication is required; the vulnerability is triggered by parsing a specially crafted PDF file. Patch version 6.10.1 is available from the vendor.

Information Disclosure Python Red Hat Suse
NVD GitHub VulDB
CVSS 4.0
6.9
EPSS
0.0%
CVE-2026-27025 Feb 20, 22:16 PyPI MEDIUM PATCH This Month

Resource exhaustion in pypdf versions prior to 6.7.1 occurs when processing maliciously crafted PDF files with manipulated /ToUnicode font entries, causing excessive memory consumption and processing delays during text extraction operations. A local attacker with file access can exploit this to degrade system performance, though no code execution or data compromise is possible. The vulnerability affects Python environments using pypdf and is remedied by upgrading to version 6.7.1 or later.

Python Pypdf Red Hat Suse
NVD GitHub VulDB
CVSS 3.1
5.5
EPSS
0.0%
CVE-2025-55181 Dec 02, 22:16 MEDIUM PATCH This Month

CVE-2025-55181 is a security vulnerability (CVSS 5.3). Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Denial Of Service Proxygen
NVD GitHub
CVSS 3.1
5.3
EPSS
0.1%
CVE-2025-56571 Sep 30, 16:15 npm HIGH This Week

Finance.js v4.1.0 contains a Denial of Service (DoS) vulnerability via the IRR function’s depth parameter. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Finance Js
NVD GitHub
CVSS 3.1
7.5
EPSS
0.1%
CVE-2024-4227 Jan 15, 08:15 HIGH This Month

In Genivia gSOAP with a specific configuration an unauthenticated remote attacker can generate a high CPU load when forcing to parse an XML having duplicate ID attributes which can lead to a DoS. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Information Disclosure
NVD
CVSS 3.1
7.5
EPSS
0.2%
EPSS 0% CVSS 4.8
MEDIUM POC PATCH This Month

Resource exhaustion in pypdf before 6.15.0 enables denial of service via crafted PDF files containing CID font width entries with maliciously large range values. Any application that processes untrusted PDFs using pypdf's text extraction or font parsing routines is affected, as the library iterates over attacker-controlled CID width ranges without bounds enforcement, consuming excessive CPU and memory. No public exploit code has been identified at time of analysis, and this vulnerability is not listed in the CISA KEV catalog.

Information Disclosure Red Hat Suse
NVD GitHub VulDB
EPSS 0% CVSS 8.7
HIGH PATCH This Week

CPU exhaustion in Bouncy Castle for Java's MLS (Messaging Layer Security) implementation allows a network attacker to trigger unbounded HKDF key-derivation iterations by supplying a crafted 32-bit generation counter in an MLS message. The hash-ratchet in GroupKeySet.get(int generation) advances one HKDF step per skipped generation without any upper bound, so a maximally crafted counter forces up to ~4.29 billion derivation steps on the receiving process. Scored CVSS 4.0 at 8.7 with High availability impact and no authentication prerequisites per vendor scoring; no public exploit code or KEV listing has been identified at time of analysis.

Java Information Disclosure Bc Java
NVD GitHub VulDB
EPSS 1% CVSS 8.2
HIGH PATCH This Week

Denial of service in Next.js App Router with Server Actions allows remote attackers to exhaust CPU resources and block request processing. Affected versions include all 13.0.0–15.5.20 and 16.0.0–16.2.10 releases. No active exploitation or public exploit code has been identified at time of analysis.

Information Disclosure Red Hat
NVD GitHub VulDB
EPSS 0% CVSS 5.1
MEDIUM PATCH This Month

Denial-of-service via algorithmic complexity in pypdf before 6.12.0 allows an attacker who can supply a crafted PDF file to cause excessive processing time during cross-reference stream parsing. The vulnerability is triggered by crafting a PDF with /W [0 0 0] field values in a cross-reference stream combined with a large /Size value, which causes the library to perform unbounded iteration over zero-byte entries. No public exploit code has been identified at time of analysis, and this vulnerability is not listed in the CISA KEV catalog; however, any application that processes untrusted PDF input using pypdf is exposed.

Information Disclosure Python Suse +1
NVD GitHub
EPSS 0% CVSS 4.8
MEDIUM PATCH This Month

Denial of service via algorithmic complexity in pypdf versions prior to 6.10.2 allows local attackers to cause long runtimes by crafting a PDF with an excessively large trailer /Size value when loaded in incremental mode. The vulnerability requires user interaction to load the malicious PDF and results in availability degradation rather than data compromise. Patch version 6.10.2 is available from the vendor.

Information Disclosure Python Red Hat +1
NVD GitHub
EPSS 0% CVSS 6.9
MEDIUM PATCH This Month

Denial of service in pypdf prior to version 6.10.1 allows remote attackers to craft malicious PDF files with oversized cross-reference stream `/Size` values or object stream `/N` values, causing excessive processing time and long runtimes. No authentication is required; the vulnerability is triggered by parsing a specially crafted PDF file. Patch version 6.10.1 is available from the vendor.

Information Disclosure Python Red Hat +1
NVD GitHub VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

Resource exhaustion in pypdf versions prior to 6.7.1 occurs when processing maliciously crafted PDF files with manipulated /ToUnicode font entries, causing excessive memory consumption and processing delays during text extraction operations. A local attacker with file access can exploit this to degrade system performance, though no code execution or data compromise is possible. The vulnerability affects Python environments using pypdf and is remedied by upgrading to version 6.7.1 or later.

Python Pypdf Red Hat +1
NVD GitHub VulDB
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

CVE-2025-55181 is a security vulnerability (CVSS 5.3). Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Denial Of Service Proxygen
NVD GitHub
EPSS 0% CVSS 7.5
HIGH This Week

Finance.js v4.1.0 contains a Denial of Service (DoS) vulnerability via the IRR function’s depth parameter. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Finance Js
NVD GitHub
EPSS 0% CVSS 7.5
HIGH This Month

In Genivia gSOAP with a specific configuration an unauthenticated remote attacker can generate a high CPU load when forcing to parse an XML having duplicate ID attributes which can lead to a DoS. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Information Disclosure
NVD

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